Log Message:
Update py-passlib to 1.6.2.

**1.6.2** (2013-12-26)
======================

    Minor changes & compatibility fixes

    * Re-tuned the :attr:`~passlib.ifc.PasswordHash.default_rounds`
      values for all of the hashes.

    * Added the new :doc:`bcrypt_sha256 <lib/passlib.hash.bcrypt_sha256>` hash,
      which wraps BCrypt using SHA256 in order to work around
      BCrypt's password size limitations (:issue:`43`).

    * :doc:`passlib.hash.bcrypt <lib/passlib.hash.bcrypt>`:
      Added support for the `bcrypt <https://pypi.python.org/pypi/bcrypt>`_
      library as one of the possible bcrypt backends that will be
      used if available.  (:issue:`49`)

    * :mod:`passlib.ext.django`: Passlib's Django extension
      (and it's related hashes and unittests) have been updated to
      handle some minor API changes in Django 1.5-1.6. They should
      now be compatible with Django 1.2 and up.  (:issue:`50`)